Moons of Pluto
Moons Of Planets
| Moons on Pluto | ||||||
| Name | Mean diameter (km) | Mass (×1021 kg) | Semi-major axis (km) |
Orbital period (days) | Discovery date | |
| Pluto | 2390 | 13.05 ± 0.07 | 2 035* | 6.387 230 | 1930 | |
| Pluto I | Charon | 1207 ± 3 | 1.52 ± 0.06 | 17 536 ± 3* | 6.387 230 | 1978 |
| Pluto II | Nix | 46-137 | < 0.002 | 48 708 | 24.856 ± 0.001 | 2005 |
| Pluto III | Hydra | 61-167 | < 0.002 | 64 749 | 38.206 ± 0.001 | 2005 |
